Figure 6
From: Predicting outbreaks: a spatial risk assessment of West Nile virus in British Columbia
Annual total of weighed daily mosquito numbers per gird cell ( C. tarsalis only). Weight: 1 for daily mean temperature (T) below 16°C, 2 for 16°C ≤ T<20°C, 3 for 20°C ≤ T<24°C, 4 for 24°C ≤ T<28°C, 5 for T ≥ 28°C (Weight is determined for each day and for each grid cell; see text for a discussion of the methodology used to determine the weights)